Folding box and the like



Feb. 11, 1930. "M. WOLFF 1,746,507

FOLDING BOX AND THE LIKE Filed Jan. 18, 1928 2 Sheets-Shae. 2

Patented Feb. 11, 1930 UNITED [STATES MAURICE L. WOLFE, OF CHICAGO,ILLINOIS FOLDING BOX Ann THE LIKE Application filed January 18, 1928.Serial n. 247,556.

0d and construction herein employed will appear more fully in thehereinafter specification taken inconnection with the accompanyingdrawings in which,

Figure 1 is a perspective View of a box embodying my invention. Figure 2is a cross section taken on line 1 2-2 of Figure 1.

1 Figure 3 is a plan view of a box before folding.

Figure 4 is a fragmentary View of the means provided for securing thecorners of my box together, preparatory to the completion thereof.

Figure 5 is a fragmentary view of the corners of the lid and of thebottom part of a box embodying my invention.

With more particular reference to the drawings, wherein similarcharacters of reference indicate corresponding parts in the of thebottom part 1 several views of the preferred form of my invention, 11designates a sheet of cardboard having the marginal creases 12, theirregular curvedcorner slits 13 and the irregular marginal slitslf. Thecreases 12 together with the corner creases 16 18' provide means wherebythe ends 12 and the sides 17 of the r bottom part of mydevicemay befolded into shape, it being understood that the ends 15 will be foldedabout the crease 12 while the 4 sides 17 will be folded about theircorresponding crease 12, the flap 16 being foldable about the crease 16while the flap 18 will fold PATENT OFFICE a obtained on both sides andends of my device at the corners thereof, a locking engagement beingsecured by the dovetailing of the tongue 20 and slit 21into thecommunicatin auxiliary branching incisions 22,23, 21 of the slit 14. Theincision 22 which is down wardly projected and registers directly withthe slit 21 isformed as a prolongation of the upwardly directed incision23, the latter being adapted to receive a portionj21' ofthe flap 16immediately below theslit 21 should the flap 16 shift upwardlywhen-subjecte to strain. The incision 24 is of arcuate configuration andserves to clampingly receive an edge of the tongue 20. The general purposeof the slits 21 and 14 and the auxiliary branching incisions 22, 23,24:, it will thus be seen, is to provide a locking arrangement whichwill prevent the inadvertent detachment of the tongue20 from the slits14.- an the auxiliary branching incisions: 22, an

24, since the upwardly '"projecting-incision 23 will receive that partof the material jim mediately below the slit 21 and thusprevent thedisengagement of the marginal portion 7 15'from the flap 16. i 1

I am aware of conventional'methods of corner reinforcing means asemployed in folding boxes,but the expedients used either provide adoublefold at only one side of the corner of the box, orthe constructionis such as to leave an aperture or passageway at that point wherebysoiling of the contents of the box readily takesplace, and with certainvarieties of commodities, such as food products, actually permitsthe'contents to leak out or to scatter crumbs andifragments around whenthe box is handled. My novel corner construction in folding boxes notonly completely eliminates the soiling and leakage of contents referredto, but

rovides a corner reinforcement demonstra ly superior to methods invogue. u

My folding box is manufactured by feedin card and paste board stock to adie stampin machine, a single operation of which suffices to cut andcrease the stock placed therein into the flat unfolded shape shown inFigure 3. The folding may then be accomplishe by machinery or by hand,as desired.

The lid 23 of my container is practically a counter part of the bottomportion 11, it being observed however, that I place the slits 14 in thesides and the flaps 16 in the ends, this bein a reversal of the positionof the slits and aps of the bottom part. The result of this method isthat when the lid 23 is placed over the bottom part 11, a quadruple foldis obtained at the corners of my container when the lid is placedthereon,a comparatively strong, strain and stress resisting cornerconstruction resulting from this method.

While I have described and illustrated a preferred form of my inventionwith some degree of particularity, it will be understood that some minorchanges may be made therein; hence I do not wish to confine myselfliterally to the precise details as set forth, but widi to avail myselfof such variations and modifications as fairly fall within the scope ofthe appended claim.

- What I claim as new and] desire. to secure by Letters Patent is:

A folding box formed of a single sheet of material w th foldable marginsat the sides and ends thereof, corner members at the ends o'fmidmargins, one of said foldable margins havi a slit formed with acomparatively straig t diagonally stretching portion terminating at oneend in an arcu'ate portion, the other'eud of said diagonally stretchingportion having a downwardly projecting portion communicating with anupwardly and inwardly directed fpar the diagonally stretching portion osaid slit receiving a tongue integrally formed with one of sai cornermembers, said tongue having an incision at the side thereof, saidincision registering with said downwardly projeoting portion of saiddiagonally stretchmg 5111:, whereby the tongue will be lockingly agedwith said slit while said incision :iifi register with said downwardlyprojecting portion of the said diagonally stretching slit to providemeans for a comparatively secure evenly aligned corner bracingformation, aid upwardly and inwardly directed part partially receiving aportion of material when shifting, said portion of material beingadjacent the tongue andserving to prevent the tongue frombeingdisengaged therefrom.

In testimony whereof I have signed my name to this specification.

. 'MAURICE L; WOLFE.

